Heat exchanger having powder coated elements

Details Heat exchanger having powder coated elements Heat exchanger having powder coated elements

2005-08-04

2010-10-26

Duong, Tho v (Department: 3744)

Heat exchange

With coated, roughened or polished surface

C165S004000, C029S890030

Reexamination Certificate

active

07819176

ABSTRACT:
Powder coated heat exchange elements for a heat exchanger. Powder coating provides improved protective coating on surfaces of heat exchange elements. In many applications, the heat exchange elements are subjected to harsh operating conditions that promote corrosion. Traditional enamel coating tends to fracture when subjected to mechanical stresses thereby allowing corrosion inducing agents to penetrate and corrode the underlying surfaces. Powder coating reduces breaches in the protective layer. Powder coating may be adapted to withstand high temperatures so as to make them suitable for use in harsh operating environments. One such environment can be found in the processing of flue gas from fossil burning power generators, where the flue gas has a relatively high temperature and high sulfur content.

REFERENCES:
patent: 1762446 (1930-06-01), Ljungstrom
patent: 2731432 (1956-01-01), Toulmin, Jr.
patent: 2974051 (1961-03-01), Moore
patent: 3142583 (1964-07-01), McMahon
patent: 3372038 (1968-03-01), Weldes et al.
patent: 3389002 (1968-06-01), Huffcut
patent: 3513012 (1970-05-01), Point
patent: 3910344 (1975-10-01), Hagen
patent: 3974360 (1976-08-01), Panzarino
patent: 3974380 (1976-08-01), Panzarino et al.
patent: 3978316 (1976-08-01), Rose et al.
patent: 4015048 (1977-03-01), Martin
patent: 4093435 (1978-06-01), Marron et al.
patent: 4200441 (1980-04-01), Honmann et al.
patent: 4281451 (1981-08-01), Mann
patent: 4421789 (1983-12-01), Kaneko et al.
patent: 4542782 (1985-09-01), Berner
patent: 4552204 (1985-11-01), Bellows
patent: 4558732 (1985-12-01), Bellows
patent: 4665880 (1987-05-01), McWade
patent: 4698415 (1987-10-01), Sinclair et al.
patent: 4733056 (1988-03-01), Kojima et al.
patent: 4744410 (1988-05-01), Groves
patent: 4838342 (1989-06-01), Goetschius
patent: 5034432 (1991-07-01), Ueno et al.
patent: 5185297 (1993-02-01), Park et al.
patent: 5190830 (1993-03-01), Matsuo et al.
patent: 5229470 (1993-07-01), Nozaki et al.
patent: 5272185 (1993-12-01), Matsumura et al.
patent: 5330794 (1994-07-01), Bosco et al.
patent: 5407741 (1995-04-01), Ota
patent: 5539031 (1996-07-01), van Ooij
patent: 5635548 (1997-06-01), Kittle et al.
patent: 5881799 (1999-03-01), Kozacka et al.
patent: 5930459 (1999-07-01), Eckman et al.
patent: 5950707 (1999-09-01), Kozacka et al.
patent: 6013898 (2000-01-01), Mizuno et al.
patent: 6077483 (2000-06-01), Locker et al.
patent: 6106630 (2000-08-01), Frankel
patent: 6130410 (2000-10-01), Kita
patent: 6201217 (2001-03-01), Moon et al.
patent: 6253833 (2001-07-01), Koster et al.
patent: 6264905 (2001-07-01), Spokoyny
patent: 6472472 (2002-10-01), Jung et al.
patent: 7244780 (2007-07-01), Robinson et al.
patent: 2002/0078856 (2002-06-01), Hahn et al.
patent: 2002/0169234 (2002-11-01), Ring et al.
patent: 2003/0148026 (2003-08-01), Mushett et al.
patent: 2003/0149193 (2003-08-01), Rickert et al.
patent: 512 071 (1952-06-01), None
patent: WO 94/29660 (1994-12-01), None
patent: WO 99/35458 (1999-07-01), None
SCR Compatability for the Ljungstrom Air Preheater, Louis P. Bondurant III, published 1999, 8 pages.
SCR and SNCR Processes Increase the Risk of Air Preheater Fouling, Lehigh Energy Update, vol. 19 Jun. 2001, 3 pages.
“The VN air preheater”, Technical description, Howden Sirocco, Heavy Machines Division.
Non-final Office Action in U.S. Appl. No. 10/793,182,mailed Dec. 19, 2005.
Non-final Office Action in U.S. Appl. No. 10/793,182, mailed May 22, 2006.
Final Office Action in U.S. Appl. No. 10/793,182, mailed Dec. 27, 2006.
Non-final Office Action in U.S. Appl. No. 10/793,182, mailed Sep. 12, 2007.
Final Office Action in U.S. Appl. No. 10/793,182, mailed Apr. 9, 2008.
Search Report for PCT Application No. PCT/US2006/030337, mailed Nov. 24, 2006.
Non-final Office Action in U.S. Appl. No. 10/793,182, mailed October 30, 2009.
Final Office Action mailed on Jul. 9, 2009 in U.S. Appl. No. 10/793,182.
Non-final Office Action mailed on Feb. 22, 2010 in U.S. Appl. No. 10/793,182.

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